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    FIXATION IDENTIFICATION USING DENSITY OPTIMIZATION
    124.
    发明申请
    FIXATION IDENTIFICATION USING DENSITY OPTIMIZATION 审中-公开

    公开(公告)号：US20180032816A1

    公开(公告)日：2018-02-01

    申请号：US15662965

    申请日：2017-07-28

    Applicant: WORCESTER POLYTECHNIC INSTITUTE

    Inventor： Andrew C. Trapp ,  Soussan Djamasbi ,  Wen Liu

    IPC: G06K9/00 ,  G06K9/62 ,  G06T7/73 ,  G06F3/01

    CPC classification number: G06K9/00617 ,  G06F3/013 ,  G06K9/00 ,  G06K9/00604 ,  G06K9/0061 ,  G06K9/6218 ,  G06K9/6222 ,  G06T7/74

    Abstract: A fixation identification system includes an eye-tracking device and a fixation identification device disposed in electrical communication with the eye-tracking device. The fixation identification device includes a controller having a memory and a processor, the controller being configured to identify each gaze position data element received from the eye-tracking device as one of fixation gaze position data and saccade gaze position data, each gaze position data element corresponding to a visual location associated with a field of view at a corresponding time; identify at least one fixation region associated with the fixation gaze position data; adjust a number of fixation gaze position data elements associated with the at least one fixation region; and generate a density optimized fixation region based upon the adjusted number of fixation gaze position data elements.

    Actuation systems and methods
    125.
    发明授权
    Actuation systems and methods 有权

    公开(公告)号：US09879767B2

    公开(公告)日：2018-01-30

    申请号：US14903126

    申请日：2014-07-10

    Applicant: Worcester Polytechnic Institute

    Inventor： Marko B. Popovic ,  Christopher J. Berthelette ,  Matthew Dipinto ,  James D. Sareault ,  Thane R. Hunt

    IPC: F16H33/02 ,  F03G1/02 ,  F03G3/08

    CPC classification number: F16H33/02 ,  F03G1/02 ,  F03G3/08

    Abstract: Actuation systems and methods are disclosed. Such systems may comprise a motor having a drive shaft, one or more modules coupled to the drive shaft, each module comprising one or more energy storage elements and one or more actuating members connecting the one or more energy storage elements to one or more degrees of freedom, which are configured to actuate in response to a discharge of energy from the one or more energy storage element, and a plurality of clutches associated with each module to couple the energy storage element of the module to the drive shaft of the motor and to control an energy state of the energy storage element independent of energy storage elements of other modules.

    Soft-body deformation and force sensing
    126.
    发明授权
    Soft-body deformation and force sensing 有权

    公开(公告)号：US09857245B2

    公开(公告)日：2018-01-02

    申请号：US15064872

    申请日：2016-03-09

    Applicant: Worcester Polytechnic Institute

    Inventor： Cagdas D. Onal ,  Selim Ozel

    IPC: G01L1/12 ,  B25J13/08 ,  B25J15/12 ,  G01L5/22

    CPC classification number: G01L1/122 ,  B25J13/088 ,  B25J15/12 ,  G01L5/226 ,  Y10S901/46

    Abstract: A robotic sensing and touch apparatus detects gradual deformations in a resilient surface, in contrast to conventional rigid member displacement. Hall effect sensors coupled to rare-earth magnets in a deformable base allow sensing of surface curvature and compression against grasped objects. The deformable base, such as a silicone mold or other resilient encapsulation, fixes a magnetic source and an opposed Hall effect sensor. Calibration of a received magnetic field is defined by a sensor element voltage in an “at rest” (undeformed) state, and at successive degrees of deformation resulting from compression of the deformable base that draws the magnet in different orientations relative to the Hall effect sensor. An array of magnet and sensor element pairs allows relative sensing over an area for detecting curvature of a translated or articulated member, or engagement with a curved surface.

    Transport container flame arrestor
    127.
    发明授权
    Transport container flame arrestor 有权

    公开(公告)号：US09707422B2

    公开(公告)日：2017-07-18

    申请号：US14638229

    申请日：2015-03-04

    Applicant: Worcester Polytechnic Institute

    Inventor： Brian E. Elias ,  Robert G. Zalosh ,  Ali S. Rangwala

    IPC: A62C3/07 ,  A62C3/06 ,  A62C2/06 ,  B60K15/04 ,  A62C4/00

    CPC classification number: A62C3/065 ,  A62C4/00

    Abstract: A volatile liquid storage container has combustion resistance properties from a flexible sock or tube constructed of fire resistant fibers coupled to a neck of the storage container to prevent flame flash-back into the storage container. The storage container defines an enclosed volume having an orifice in the container material leading to a neck for pouring and filling the enclosed volume for exchanging the contents therein. The tube is elongated and surrounds a circumference of the orifice for engaging any ignition source entering through the orifice. The flexible nature of the tube or sock allows it to extend to an opposed interior surface of the enclosed volume, and ensures that the tube or sock is immersed in the fluid for encircling any ignition path to the volatile liquid without interfering with an ability to pour or refill the container.

    Cable Driven Manipulator for Additive Manufacturing
    128.
    发明申请
    Cable Driven Manipulator for Additive Manufacturing 审中-公开

    公开(公告)号：US20170095973A1

    公开(公告)日：2017-04-06

    申请号：US15286942

    申请日：2016-10-06

    Applicant: Worcester Polytechnic Institute

    Inventor： Sarah M. Chamberlain ,  Richard T. Eberheim

    IPC: B29C67/00 ,  B33Y50/02 ,  B33Y30/00 ,  B28B1/00 ,  B33Y10/00

    CPC classification number: B33Y10/00 ,  B28B1/001 ,  B29C64/106 ,  B29C64/20 ,  B29C64/386 ,  B29K2105/12 ,  B33Y30/00 ,  B33Y50/02

    Abstract: A parallel robotic manipulator for generating 3 dimensional structures includes a set of redeployable towers adapted to transport one or more cables, and at least one drive source operable to draw or traverse the cables across a rendering area. An end-effector suspended from the cables is operable to deposit extrudate onto the rendering area, and a nozzle in the end-effector is configured to selectively deposit the extrudate at predefined locations based on the position of the cable. A control unit has control logic for directing the drive source, in which the cables are responsive to the drive source for disposing the end-effector either along the cables or drawn and extended from the towers. An extrudate reservoir and a pump in fluidic communication with the reservoir allows the pump to force the extrudate for deposition at the predefined location responsive to the control logic.

    ELECTROHYDRODYNAMIC (EHD) REFRIGERANT PUMP
    129.
    发明申请
    ELECTROHYDRODYNAMIC (EHD) REFRIGERANT PUMP 审中-公开

    公开(公告)号：US20170089611A1

    公开(公告)日：2017-03-30

    申请号：US15279852

    申请日：2016-09-29

    Applicant: WORCESTER POLYTECHNIC INSTITUTE

    Inventor： Jamal S. Yagoobi

    IPC: F25B1/10 ,  H02N11/00 ,  F25B31/00

    CPC classification number: F25B1/10 ,  F04B17/00 ,  F04B19/006 ,  F25B1/00 ,  F25B31/00 ,  F28F2250/08 ,  H02K44/02 ,  H02K44/04 ,  H02N11/006

    Abstract: An electrohydrodynamic (EHD) pump increases refrigerant flow rate and the resulting pressure in a vapor compression based cooling system for permitting reduced compressor sizes and power demands. The EHD pump disposes electrodes in a liquid path of the refrigerant flow, and increases fluid flow and resulting pressure by an induced liquid flow between a pair of asymmetric electrodes. Voltage applied to these electrodes results in a conduction pumping mechanism associated with heterocharge layers in the vicinity of the electrodes based on disassociation of a neutral electrolyte species in the refrigerant fluid and recombination of the generated ions. The induced flow draws the liquid due to a net fluid flow toward one of the electrodes based on the asymmetry of the electrode pair. Electrodes are disposed on an inner surface of a refrigerant vessel, in communication with an annular liquid film that forms around the inner circumference in two-phase fluid systems.

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